<template>
  <div class="app-container">
    <!-- 查询和其他操作 -->
    <div class="filter-container">
      <el-input
        v-model="listQuery.tableNo"
        clearable
        class="filter-item"
        style="width: 200px"
        placeholder="请输入餐桌号"
      />
      <el-button
        v-permission="['GET /admin/qrcode/list']"
        class="filter-item"
        type="primary"
        icon="el-icon-search"
        @click="handleFilter"
        >查找</el-button
      >
      <el-button
        v-permission="['POST /admin/qrcode/create']"
        class="filter-item"
        type="primary"
        icon="el-icon-edit"
        @click="handleCreate"
        >添加</el-button
      >
    </div>

    <!-- 查询结果 -->
    <el-table
      v-loading="listLoading"
      :data="list"
      element-loading-text="正在查询中。。。"
      border
      fit
      highlight-current-row
    >
      <el-table-column align="center" label="编号" prop="id" sortable />

      <el-table-column align="center" label="餐桌号" prop="tableNo" />

      <el-table-column align="center" label="大小" prop="imgSize" />

      <el-table-column align="center" label="二维码" prop="picUrl">
        <template slot-scope="scope">
          <img
            id="imgWrapper"
            v-if="scope.row.picBlob"
            :src="'data:image/jpeg;base64,' + scope.row.picBlob"
            width="40"
          />
        </template>
      </el-table-column>

      <el-table-column align="center" label="协议" prop="httpTcp" />

      <el-table-column align="center" label="操作" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            :loading="downloadLoading"
            size="mini"
            type="primary"
            icon="el-icon-download"
            @click="handleDownload(scope.row)"
            >导出</el-button
          >
          <el-button
            v-permission="['POST /admin/admin/update']"
            type="primary"
            size="mini"
            @click="handleUpdate(scope.row)"
            >编辑</el-button
          >
          <el-button
            v-permission="['POST /admin/qrcode/delete']"
            type="danger"
            size="mini"
            @click="handleDelete(scope.row)"
            >删除</el-button
          >
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total > 0"
      :total="total"
      :page.sync="listQuery.page"
      :limit.sync="listQuery.limit"
      @pagination="getList"
    />

    <!-- 添加或修改对话框 -->
    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form
        ref="dataForm"
        :rules="rules"
        :model="dataForm"
        status-icon
        label-position="left"
        label-width="100px"
        style="width: 400px; margin-left: 50px"
      >
        <el-form-item label="餐桌号:" prop="tableNo">
          <el-input v-model="dataForm.tableNo" placeholder="请输入餐桌号" />
        </el-form-item>
        <el-form-item label="跳转规则:" prop="httpTcp">
          <el-input
            v-model="dataForm.httpTcp"
            placeholder="小程序后台配置的二维码跳转小程序规则"
          />
        </el-form-item>
        <el-form-item label="尺寸大小:" prop="imgSize">
          <el-input
            v-model="dataForm.imgSize"
            placeholder="请输入1-9999数字,不输入则默认为100"
          />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取消</el-button>
        <el-button v-if="dialogStatus == 'create'" type="primary" @click="createData"
          >确定</el-button
        >
        <el-button v-else type="primary" @click="updateData">确定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<style>
.qrcode-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.qrcode-uploader .el-upload:hover {
  border-color: #20a0ff;
}
.qrcode-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 120px;
  height: 120px;
  line-height: 120px;
  text-align: center;
}
.qrcode {
  width: 145px;
  height: 145px;
  display: block;
}
</style>

<script>
import { listQrcode, createQrcode, deleteQrcode, updateQrcode } from "@/api/qrcode";
import { getToken } from "@/utils/auth";
import Pagination from "@/components/Pagination"; // Secondary package based on el-pagination

export default {
  name: "Qrcode",
  components: { Pagination },
  data() {
    return {
      list: null,
      total: 0,
      roleOptions: null,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 20,
        sort: "add_time",
        order: "desc",
      },
      dialogFormVisible: false,
      dialogStatus: "",
      textMap: {
        update: "编辑",
        create: "创建",
      },
      dataForm: {
        tableNo: undefined,
        httpTcp: undefined,
        imgSize: undefined,
      },
      rules: {
        tableNo: [{ required: true, message: "桌号不能为空", trigger: "blur" }],
        httpTcp: [{ required: true, message: "协议不能为空", trigger: "blur" }],
      },
      downloadLoading: false,
    };
  },

  created() {
    this.getList();
  },
  methods: {
    getList() {
      this.listLoading = true;
      listQrcode(this.listQuery)
        .then((response) => {
          this.list = response.data.data.list;
          this.total = response.data.data.total;
          this.listLoading = false;
        })
        .catch(() => {
          this.list = [];
          this.total = 0;
          this.listLoading = false;
        });
    },
    handleFilter() {
      this.listQuery.page = 1;
      this.getList();
    },
    resetForm() {
      this.dataForm = {
        tableNo: undefined,
        httpTcp: undefined,
        imgSize: undefined,
      };
    },

    handleCreate() {
      this.resetForm();
      this.dialogStatus = "create";
      this.dialogFormVisible = true;
      this.$nextTick(() => {
        this.$refs["dataForm"].clearValidate();
      });
    },

    createData() {
      this.$refs["dataForm"].validate((valid) => {
        if (valid) {
          createQrcode(this.dataForm)
            .then((response) => {
              this.list.unshift(response.data.data);
              this.dialogFormVisible = false;
              this.$notify.success({
                title: "成功",
                message: "添加二维码成功",
              });
            })
            .catch((response) => {
              this.$notify.error({
                title: "失败",
                message: response.data.errmsg,
              });
            });
        }
      });
    },

    handleUpdate(row) {
      this.dataForm = Object.assign({}, row);
      this.dialogStatus = "update";
      this.dialogFormVisible = true;
      this.$nextTick(() => {
        this.$refs["dataForm"].clearValidate();
      });
    },

    updateData() {
      this.$refs["dataForm"].validate((valid) => {
        if (valid) {
          updateQrcode(this.dataForm)
            .then((response) => {
              for (const v of this.list) {
                if (v.id === this.dataForm.id) {
                  const index = this.list.indexOf(v);
                  this.list.splice(index, 1, response.data.data);
                  break;
                }
              }
              this.dialogFormVisible = false;
              this.$notify.success({
                title: "成功",
                message: "更新二维码成功",
              });
            })
            .catch((response) => {
              this.$notify.error({
                title: "失败",
                message: response.data.errmsg,
              });
            });
        }
      });
    },

    handleDelete(row) {
      deleteQrcode(row)
        .then((response) => {
          this.$notify.success({
            title: "成功",
            message: "二维码删除成功",
          });
          this.getList();
        })
        .catch((response) => {
          this.$notify.error({
            title: "失败",
            message: response.data.errmsg,
          });
        });
    },

    //保存二维码到本地
    handleDownload(row) {
      var a = document.createElement("a"); // 生成一个a元素
      var event = new MouseEvent("click"); // 创建一个单击事件
      a.download = row.tableNo || "photo"; // 设置图片名称
      a.href = "data:image/jpeg;base64," + row.picBlob; // 将生成的URL设置为a.href属性
      a.dispatchEvent(event); // 触发a的单击事件
    },
  },
};
</script>
